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343 Chromista
Obeliscoites dorysphaeroides
Obeliscoites perspicuus
Obeliscoites vinassai
Obesacapsula breggiensis
Obesacapsula bullata
Obesacapsula cetia
Obesacapsula lucifer
Obesacapsula magniglobosa
Obesacapsula morroensis
Obesacapsula pacifica
Obesacapsula polyedra
Obesacapsula rotunda
Obesacapsula rusconensis
Obesacapsula salensis
Obesacapsula somphedia
Obesacapsula verbana
Ochromallomonas pelophila J.W.G. Lund
Ochromonas allorgei Bourrelly
Ochromonas aspera Playfair
Ochromonas bourrellyi Magne
Ochromonas cosmopolita Ruinen
Ochromonas crenata Klebs
Ochromonas cylindracea Playfair
Ochromonas danica Pringsheim
Ochromonas minima Throndsen
Ochromonas minuscula Conrad
Ochromonas minuta
Ochromonas mutabilis
Ochromonas oblonga N. Carter
Ochromonas ostreaeformis Swale & J.H. Belcher
Ochromonas ostreaformis
Ochromonas pyriformis Matvienko
Ochromonas reducta Skuja ex T. Willén
Ochromonas resistens Skuja ex T. Willén
Ochromonas spherocystis Matvienko
Ochromonas stellaris
Ochromonas triangulata Vysotskij
Ochromonas tuberculata D.J. Hibberd
Ochromonas variabilis Meyer
Ochromonas verrucosa Skuja
Ochromonas villosa Clarke & Pennick
Ochromonas viridis
Ochrosphaera neapolitana Schussnig
Ochrosphaera neopolitana Schussnig
Ochrosphaera verrucosa Schussnig
Ochrostylon epiplankton Pascher
Octactis octonaria (Ehrenberg) Hovasse
Octactis pulchra J. Schiller
Octactis tenuis (D. Bukry) T. V. Desikachary & P. Prema
Octocyclus reinhardtii (D. Bukry) F.H. Wind & S.W. Wise
Octodendron cubocentron
Octodendron pinetum
Octopodorhabdus plethotretus F.H. Wind & P. Cepek
Octopyle intermedia
Octopyle octostyle
Octopyle stenozona
Odontella armata (Axelson, 1903)
Odontella aurita (Lyngbye) C. A. Agardh
Odontella biloba Christiansen and Bellinger, 1980
Odontella biwonensis ������������
Odontella calamus (Brun & Tempère) H. J. Schrader
Odontella clavata Christiansen and Bellinger, 1980
Odontella cornifer Mills, 1934
Odontella cornuta (J. Brun) H. J. Schrader
Odontella ewingi Folsom, 1916
Odontella granulata (Roper) R. Ross
Odontella hastata (Greville) J. Fenner ex D. M. Williams
Odontella incerta (Schött, 1917)
Odontella kapii Christainsen and Bellinger, 1992
Odontella lamellifera (Axelson, 1903)
Odontella litigiosa (Van Heurck) Hoban
Odontella longicruris (Greville) Hoban
Odontella loricata Schaeffer, 1897
Odontella mobilensis
Odontella mobiliensis (J.W. Bailey) Grunow
Odontella regia (Schultze) Simonsen
Odontella retiformis var. trigona Stosch
Odontella rhombus forma rhombus (Ehrenberg) Kützing
Odontella rossi Christiansen and Bellinger, 1980
Odontella rostrata
Odontella septentrionalis H. J. Schrader
Odontella shasta Christiansen and Bellinger, 1980
Odontella sinensis (Greville) Grunow
Odontella stella Christiansen and Bellinger, 1980
Odontella substriata Wray, 1952
Odontella uka Christainsen and Bellinger, 1992
Odontella weissflogii (Janisch) Grunow
Oerstedtia scalare
Oerstedtia scalaris (Suhr) Jensen
Oertlispongus inaequispinosus
Oestrupia bicontracta (Østrup) Lange-Bertalot & Krammer
Oestrupia ergadensis (W.Greg.) Witkowski
Oestrupia musca (Gregory) Hustedt
Oestrupia supergradata (Brun) Hendey
Oestrupia zachariasi (Reich.) Hustedt
Oestrupia zachariasii (Reichelt) Hustedt
Oikomonas mutabilis Kent
Okkolithus australis F.H. Wind & S.W. Wise
Olanda olorina
Olisthodiscus luteus N. Carter
Olivamonas asiatica (B. V. Skvortzov) B. V. Skvortzov
Ollicola vangoorii (W. Conrad) Vørs
Olpidiopsis achlyae McLarty
Olpidiopsis andreei (Lagerh.) Karling
Olpidiopsis aphanomycis Cornu
Olpidiopsis appendiculata De Wild.
Olpidiopsis brasiliensis Sparrow
Olpidiopsis braziliensis Sparrow
Olpidiopsis brevispinosa Whiffen
Olpidiopsis cruciferarum Dalla Torre
Olpidiopsis curvispinosa Whiffen
Olpidiopsis decipiens S.N. Dasgupta & R. John
Olpidiopsis deformans (Serbinow) Karling
Olpidiopsis echinata H.E. Petersen
Olpidiopsis fibrillosa De Wild.
Olpidiopsis fusiformis Cornu 1872
Olpidiopsis fusiformis var. fusiformis Cornu
Olpidiopsis fusiformis var. oedogoniorum Sorok?n
Olpidiopsis gillii (De Wild.) Friedmann
Olpidiopsis glenodiniana (P.A. Dang.) T.W. Johnson
Olpidiopsis globosa Anastasiou & Churchl.
Olpidiopsis incrassata Cornu
Olpidiopsis index Cornu
Olpidiopsis indica G.C. Srivast.
Olpidiopsis luxurians Barrett
Olpidiopsis major Maurizio
Olpidiopsis milleri Jacz.
Olpidiopsis minor A. Fisch.
Olpidiopsis myzocytia Rieth ex Cejp
Olpidiopsis oedogoniorum (De Wild.) Scherff.
Olpidiopsis paradoxa (H.E. Petersen) T.W. Johnson
Olpidiopsis pythii (E.J. Butler) Karling
Olpidiopsis pythii f. brevispinosa (Whiffen) Cejp
Olpidiopsis pythii f. pythii (E.J. Butler) Karling
Olpidiopsis ricciae du Plessis
Olpidiopsis saprolegniae Cornu 1872
Olpidiopsis saprolegniae var. indica Dayal & J. Thakur
Olpidiopsis saprolegniae var. levis Coker 1923
Olpidiopsis saprolegniae var. saprolegniae Cornu
Olpidiopsis schenkiana Zopf
Olpidiopsis sorokinei De Wild.
Olpidiopsis sphacellarum (Kny) Sparrow
Olpidiopsis sphaericis S.N. Dasgupta & R. John
Olpidiopsis sphaeritae (P.A. Dang.) Karling
Olpidiopsis spinosa Tokun.
Olpidiopsis ucranica Wize
Olpidiopsis varians Shanor
Olpidiopsis verrucosa T.W. Johnson
Olpidiopsis verrucosa var. radicicola Dalla Torre
Olpidiopsis verrucosa var. verrucosa T.W. Johnson
Olpidiopsis vexans Barrett
Olpidiopsis vuilleminiae G. Arnaud
Olpidiopsis zopfii De Wild.
Ommatodiscus pantanelli
Omphalophyllum ulvaceum Rosenvinge
Onslowia bahamensis E. C. Henry
Onslowia endophytica Searles
Opephora ansata M. H. Hohn & J. Hellerman
Opephora burchardtiae Witkowski
Opephora burchardtiana
Opephora gemmata (Grunow) Hustedt
Opephora guenter-grassii (A. Witkowski & H. Lange-Bertalot) K. Sabbe & W. Wyverman
Opephora horstiana Witkowski
Opephora krumbeinii A. Witkowski, Witak & K. Stachura
Opephora marina (Gregory) Petit
Opephora martyi var. baicalensis Skvortzov
Opephora minuta (Cleve-Euler) Witkowski
Opephora mutabilis K. Sabbe & W. Wyverman
Opephora naveana R. Le Cohu
Opephora neoelliptica (A. Witkowski) A. Witkowski, D. Metzeltin & H. Lange-Bertalot
Opephora olsenii Møller
Opephora pacifica (Grunow) Petit
Opephora parva (Grunow) Krasske
Opephora pinnata Ehrenberg
Opephora schulzii (Brockmann) Simonsen
Opephora schwartzii (Grunow) Petit ex Pelletan
Opephora schwatzii (Grunow) Petit
Ophiaster hydroideus (Lohmann) Lohmann
Ophiocytium apiculatum Nägeli
Ophiocytium arbuscula (A. Braun) Rabenhorst
Ophiocytium bicuspidatum (Borge) Lemmermann
Ophiocytium capitatum Wolle
Ophiocytium capitatum var. longispinum (K. Möbius) Lemmermann
Ophiocytium cochleare (Eichwald) A. Braun
Ophiocytium cochleare var. arbuscula (A. Braun) Playfair
Ophiocytium cochleare var. bicuspidatum Borge
Ophiocytium lagerheimii
Ophiocytium maius
Ophiocytium majus Nägeli
Ophiocytium parvulum (Perty) A. Braun
Ophiocytium tenellum Sande Lacoste & Suringar
Ophiocytium tenellum apiculatum Sande Lacoste & Suringar
Ophiocytium tenellum var. apiculatum Sande Lacoste & Suringar
Ophiocytium terrestre J. Heyward
Ophtalmidium abriolense
Ophtalmidium chiangchiangensis
Ophtalmidium exiguum
Ophtalmidium fusiforme
Ophtalmidium leischneri
Ophtalmidium lucidum
Ophtalmidium macfadyeni
Ophtalmidium maximum
Ophtalmidium plectospirus
Orastrum asarotum F.H. Wind & S.W. Wise
Orastrum campanense (P. Cepek) F.H. Wind & S.W. Wise
Orbiculiforma callosa
Orbiculiforma helios
Orbiculiforma hullae
Orbiculiforma impressa
Orbiculiforma incognita
Orbiculiforma iniqua
Orbiculiforma kanayamaensis
Orbiculiforma lowreyensis
Orbiculiforma maxima
Orbiculiforma mclaughlini
Orbiculiforma monticelloensis
Orbiculiforma multa
Orbiculiforma multangula
Orbiculiforma multifora
Orbiculiforma nevadaensis
Orbiculiforma persenex
Orbiculiforma quadrata
Orbiculiforma radiata
Orbiculiforma railensis
Orbiculiforma regis
Orbiculiforma renillaeformis
Orbiculiforma retusa
Orbiculiforma sacramentoensis
Orbiculiforma teres
Orbiculiforma trispinula
Orbiculiformella kwunaensis
Orbiculiformella sanpabloensis
Orbula comitata
Orbula ducalis
Orgyia agramma Joannis 1929
Orgyia albofasciata Schintlmeister 1989
Orgyia anartoides Walker 1855
Orgyia anceps Oberthür 1884
Orgyia aneliopa Lower 1915
Orgyia antiqua Linnaeus 1758 (Rusty Tussock Moth)
Orgyia antiquiodes (H?bner, 1822)
Orgyia antiquoides (Hübner, 1822)
Orgyia approximata Lempke 1959
Orgyia araea Collenette 1932
Orgyia ariadne Schintlmeister 1994
Orgyia athlophora Turner 1920
Orgyia aurolimbata Guenée 1835
Orgyia australis Walker 1855
Orgyia badia H.Edwards 1874
Orgyia basinigra Heylaerts 1892
Orgyia basivitta Walker 1865
Orgyia bicolor Lempke 1959
Orgyia bukowina Strand 1910
Orgyia calabra Stauder. 1916
Orgyia canifascia Walker 1865
Orgyia ceylanica Nietner 1862
Orgyia confinis Grum-Grshimailo 1891
Orgyia convergens Collenette 1938
Orgyia corsica Boisduval 1835
Orgyia corsica corsica
Orgyia corsica nupera
Orgyia costarricensis Schaus
Orgyia definita Packard 1864 (Definite Marked Tussock Moth, Definite-marked Tussock Moth, Tussock Moth)
Orgyia delineata Lempke 1959
Orgyia detrita Guerin-Meneville, 1832 (Live Oak Tussock Moth)
Orgyia dewara Swinhoe 1903
Orgyia dilutior Schultze
Orgyia dimidiata Walker 1862
Orgyia dubia (Tauscher, 1806)
Orgyia dubia dubia
Orgyia ericae Germar, 1824
Orgyia etrusca Verity 1905
Orgyia flavolimbata Staudinger 1881
Orgyia gonostigma Orgyia gonostigma NPV
Orgyia guadarramensis Staudinger 1871
Orgyia holli Oberthür 1916
Orgyia hopkinsi Collenette 1937
Orgyia immaculata Gaede 1932
Orgyia josephina Astaut, 1880
Orgyia kendalli Riotte 1972
Orgyia leuschneri Riotte 1972
Orgyia lindrothi Bryk 1943
Orgyia ludekingii Snellen 1879
Orgyia manchurica Matsumura 1933
Orgyia meridionalis Riotte 1974
Orgyia mixta Snellen 1872
Orgyia modesta Heyne 1899
Orgyia nantonis Matsumura 1933
Orgyia nebulosa Walker 1862
Orgyia nova Fitch 1865
Orgyia nubila Candèze 1927
Orgyia nupera Turati 1919
Orgyia nurolhaki Ebert 1968
Orgyia ochrodorsalis Rebel 1948
Orgyia ochrolimbata Staudinger 1881
Orgyia ocularis Moore 1879
Orgyia orgyioides van Eecke 1928
Orgyia orientalis Staudinger 1901
Orgyia osseata Walker 1862
Orgyia panlacroixii Oberthür 1876
Orgyia papuana Riotte 1976
Orgyia parallela Gaede 1932
Orgyia postica Walker 1855
Orgyia prisca Staudinger 1887
Orgyia pusilla Butler 1882
Orgyia ramburii Mabille 1867
Orgyia recens
Orgyia rindgei Riotte 1972
Orgyia rupestris Rambur 1832
Orgyia sebdouensis Oberthür 1916
Orgyia senica Hampson 1900
Orgyia septentrionalis Ranguow? 1935
Orgyia sicula Staudinger 1887
Orgyia splendida Rambur, 1842
Orgyia splendida arcerii
Orgyia splendida splendida
Orgyia tetragona Stackhouse
Orgyia thyellina Butler 1881 (White Spotted Tussock Moth)
Orgyia transiens Staudinger 1901
Orgyia triangularis Namura 1938
Orgyia tricolor Herrich-Schäffer 1856
Orgyia trigotephras Boisduval 1828
Orgyia trigotephras sicula
Orgyia trigotephras trigotephras
Orgyia tristis Grum-Grshimailo 1890
Orgyia varia Walker 1862
Orgyia vartiani Ebert 1974
Orgyia vetusta Hampson 1910
Orgyia viridescens Walker 1855
Orgyia zimmermanni Graeser 1888
Orthoseira americana (Kützing) F.E. Round, R.M. Crawford & D.G. Mann
Orthoseira circularis (Ehrenberg) R.M. Crawford, E.Y. Haw. & M.G. Kelly
Orthoseira crenulata (Ehrenberg) Studnicka
Orthoseira dendrophila (Ehrenberg) R.M. Crawford, E.Y. Haw. & M.G. Kelly
Orthoseira dendroteres (Ehrenberg) R.M. Crawford, E.Y. Haw. & M.G. Kelly
Orthoseira epidendron (Ehrenberg) R.M. Crawford, E.Y. Haw. & M.G. Kelly
Orthoseira punctata W. Smith
Orthoseira roeseana var. tropica (Krasske) Lange-Bertalot et Willmann
Orthosorus atomarius Trevisan
Ottavianus giannus J.B. Risatti
Ottavianus terrazetus J.B. Risatti
Oxyneis binalis (Ehrenberg) F.E. Round
Oxyneis binalis var. elliptica (R. J. Flower) J. C. Kingston
Last Revised: May 04, 2008